Alert archive / Florida / Special Weather Statements in 2012
Special Weather Statement, NWS Tallahassee, FL
NWS Tallahassee, FL issued this special weather statement at Jul 21, 2012, 4:59 PM EDT for Lafayette County, Florida. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2012, 4:59 PM EDT (20:59 UTC)
- Expired
- Jul 21, 2012, 5:30 PM EDT
- In force
- 31 min
- Issued by
- NWS Tallahassee, FL
County Lafayette County, FL
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 9.0 hours before the alert went out and 251 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2031 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 937 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tallahassee, FL wrote its last area forecast discussion before this special weather statement went out at Jul 21, 11:50 AM EDT, 5 hours 9 minutes earlier.
Area forecast discussion, Jul 21, 11:50 AM EDT, 5 hours 9 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TALLAHASSEE FL 1150 AM EDT Sat Jul 21 2012 .UPDATE...With the substantial amount of drying and warming in the morning soundings (especially to the east where TAE has dropped down to a PWAT of 1.41", with a significant 2-3 degree Celsius rise in the layer between 1000 and 725 mb), trimmed back rest of the morning to 18Z PoPs to silent 10s from just west to the Apalachicola and Chattahoochee Rivers, eastward across the remainder of the interior CWA. Left the 20s in to the west, and 20s and 30s in over the Coastal Waters, where moisture content, Sfc Tds, and mid-level Theta-E values are higher. This should hold true in the afternoon as well, and left current NW to SE PoP Gradient in place from the previous package (60%-20%). This scenario is also very well depicted in most of the Hi-Res WRF runs, so the current aftn package appears to be on track. && .AVIATION [through 12Z Sunday]...Expect mainly VFR conditions to prevail throughout the early morning hours across the region except for brief MVFR Cigs ECP and LIFR Conditions at VLD. With the morning sounding drying out substantially at TLH, will amend Tafs to remove the convective tempo, and may have to pull back on ABY as well. Also, already pushed the timing back on ECPs Taf from a 15Z start to to 18Z. VFR cigs and vsbys good bet after 08z, especially at ABY/DHN/ VLD. && .MARINE...Winds and seas will be a little higher over our western waters this morning. Otherwise, conditions will be fairly uniform with light winds and low seas across the entire marine area through at least through the middle of next week. Winds should remain generally out of the south today, then become more out of the south to southeast Sunday through Tuesday. && .TAE WATCHES/WARNINGS/ADVISORIES... AL...None. GA...None. FL...None. GM...None. && Gould
Hazardous weather outlook, Jul 21, 2:31 PM EDT, 2 hours 28 minutes before
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</html>In the hours before
Special weather statement, Jul 21, 4:37 PM EDT, 22 minutes before
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</html>Special weather statement, Jul 21, 4:59 PM EDT, 0 minutes before
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</html>The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 2:19 PM EDT | Rip Current Statement | TAE | Bay, Walton | 9 hr |
| Jul 21, 4:37 PM EDT | Special Weather Statement | TAE | Lafayette | 23 min |
Nearby
Special Weather Statements in Florida, 2012Every special weather statement in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.